[Evaluation of occult gastrointestinal hemorrhages].
D000328:Adult; D000748:Anemia, Macrocytic / Q000175:diagnosis*; D002859:Chromium Isotopes; D005260:Female; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis*; D005770:Gastrointestinal Neoplasms / Q000175:diagnosis*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009780:Occult Blood; D010437:Peptic Ulcer / Q000175:diagnosis*
D002859:Chromium Isotopes
K otsenke skrytykh zheludochno-kishechnykh krovotechneiĭ.